Watch an AlphaDog robot venture into (simulated) battle for the first time

Boston Dynamics' LS3, better known 'round these parts as AlphaDog, has already wowed us with a display of its stability, power and mobility. Thing is, that little clip we caught back in October took place entirely within the safe and purposefully laid out confines of a laboratory. So, the question is, what happens when you take the rather noisy quadruped outside and strap a bunch of weight to it? Well, pretty much the same thing that happened while it was nice and cozy inside -- the beast powered through the reasonably rugged terrain with nary a hitch. By the end of the tests DARPA hopes to have a mighty roboticporter capable of carrying 400 pounds of gear up to 20 miles without refueling. Though, the trek is expected to be slow and arduous as a full 24 hours is target time frame for such a journey. For full PR and to see the bot in action head on after the break.

Today's dismounted warfighter can be saddled with more than 100 pounds of gear, resulting in physical strain, fatigue and degraded performance. Reducing the load on dismounted warfighters has become a major point of emphasis for defense research and development, because the increasing weight of individual equipment has a negative impact on warfighter readiness. The Army has identified physical overburden as one of its top five science and technology challenges. To help alleviate physical weight on troops, DARPA is developing a highly mobile, semi-autonomous legged robot, the Legged Squad Support System (LS3), to integrate with a squad of Marines or Soldiers.

Recently the LS3 prototype underwent its first outdoor exercise, demonstrating the ability to follow a person using its "eyes"-sensors that allow the robot to distinguish between trees, rocks, terrain obstacles and people. Over the course of the next 18 months, DARPA plans to complete development of and refine key capabilities to ensure LS3 is able to support dismounted squads of warfighters.

Features to be tested and validated include the ability to carry 400lbs on a 20-mile trek in 24-hours without being refueled, and refinement of LS3's vision sensors to track a specific individual or object, observe obstacles in its path and to autonomously make course corrections as needed. Also planned is the addition of "hearing" technology, enabling squad members to speak commands to LS3 such as "stop," "sit" or "come here." The robot also serves as a mobile auxiliary power source- troops may recharge batteries for radios and handheld devices while on patrol.

DARPA seeks to demonstrate that an LS3 can carry a considerable load from dismounted squad members, follow them through rugged terrain and interact with them in a natural way, similar to the way a trained animal and its handler interact.

"If successful, this could provide real value to a squad while addressing the military's concern for unburdening troops," said Army Lt. Col. Joe Hitt, DARPA program manager. "LS3 seeks to have the responsiveness of a trained animal and the carrying capacity of a mule."

The 18-month platform-refinement test cycle, with Marine and Army involvement, kicks off this summer. The tests culminate in a planned capstone exercise where LS3 will embed with Marines conducting field exercises.